| /******************************************************************************* |
| * Copyright (c) 2000, 2005 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.corext.refactoring.surround; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.jdt.core.dom.ASTNode; |
| import org.eclipse.jdt.core.dom.ASTVisitor; |
| import org.eclipse.jdt.core.dom.BodyDeclaration; |
| import org.eclipse.jdt.core.dom.IVariableBinding; |
| import org.eclipse.jdt.core.dom.SimpleName; |
| import org.eclipse.jdt.core.dom.VariableDeclaration; |
| |
| import org.eclipse.jdt.internal.corext.dom.ASTNodes; |
| import org.eclipse.jdt.internal.corext.dom.Selection; |
| |
| |
| public class LocalDeclarationAnalyzer extends ASTVisitor { |
| |
| private Selection fSelection; |
| private List fAffectedLocals; |
| |
| public static VariableDeclaration[] perform(BodyDeclaration parent, Selection selection) { |
| LocalDeclarationAnalyzer analyzer= new LocalDeclarationAnalyzer(selection); |
| parent.accept(analyzer); |
| return (VariableDeclaration[]) analyzer.fAffectedLocals.toArray(new VariableDeclaration[analyzer.fAffectedLocals.size()]); |
| } |
| |
| private LocalDeclarationAnalyzer(Selection selection) { |
| fSelection= selection; |
| fAffectedLocals= new ArrayList(1); |
| } |
| |
| public boolean visit(SimpleName node) { |
| IVariableBinding binding= null; |
| if (node.isDeclaration() || !considerNode(node) || (binding= ASTNodes.getLocalVariableBinding(node)) == null) |
| return false; |
| handleReferenceToLocal(node, binding); |
| return true; |
| } |
| |
| private boolean considerNode(ASTNode node) { |
| return fSelection.getVisitSelectionMode(node) == Selection.AFTER; |
| } |
| |
| private void handleReferenceToLocal(SimpleName node, IVariableBinding binding) { |
| VariableDeclaration declaration= ASTNodes.findVariableDeclaration(binding, node); |
| if (declaration != null && fSelection.covers(declaration)) |
| addLocalDeclaration(declaration); |
| } |
| |
| private void addLocalDeclaration(VariableDeclaration declaration) { |
| if (!fAffectedLocals.contains(declaration)) |
| fAffectedLocals.add(declaration); |
| } |
| } |